How to login to NOUN Elearn Portal
You can now use you matric number to login as your username and password in a lowercase.
https://elearn.nouedu2.net/login/
Note that you are to change your passw...
Course Code: CIT 844
Time Allowed: 2½ hrs
Course Title: Advanced Database Management System
Course Unit: 2 Credits
Total mark is 100 and each question carries 25 marks
Answer 4 Questions.
1a. Explain what a Database is? (4 marks)
1b. List and explain any three (3) security measures used to protect database. (9 marks)
1c. Mention three (3) advantages of database (9 marks)
2a. What is an open source? (7 marks)
2b. List three advantages of open source software. (9 marks)
2d. Mention any three network topology (9 marks)
3a. Write short note on the following:
3b. Differentiate between a centralized and distributed database systems (8 marks)
3c. Explain what encryption is? (5 marks)
4a. What is a Transaction? (5 marks)
4b.Give the full meaning of the following acronyms:
(i)OODBMS
(ii) ORDBMS
(iii) GIGO
(iv) DDL
(v)SDLC
(vi) PC
(vii) DBMS (2 mark each)
4c. Identify any three database models (6 marks)
5a. What is SQL? (5 marks)
5b. List any five (5) operators and their description in SQL. (10 marks)
5c. List five (5) failures that could make the DBMS require recovery (10 marks)
6a. Explain what Relational Database is? (7 marks)
6b. Differentiate between Single User and Multiple User (8 marks)
6d. Outline four (4) maintenance activities by the database administrator. (8 marks)
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You can now use you matric number to login as your username and password in a lowercase.
https://elearn.nouedu2.net/login/
Note that you are to change your passw...
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